1、BSI Standards PublicationBS EN 50125-1:2014Railway applications Environmental conditions forequipment -Part 1: Rolling stock and on-boardequipmentBS EN 50125-1:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50125-1:2014.It supersedes BS EN 50125-1:1999 whi
2、ch is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee GEL/9/2, Railway Electrotechnical Applications - Rollingstock.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all
3、the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 72995 9ICS 29.280; 45.060.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This Briti
4、sh Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2014.Amendments issued since publicationDate Text affectedBS EN 50125-1:2014EUROPEAN STANDARD EN 50125-1 NORME EUROPENNE EUROPISCHE NORM April 2014 CENELEC European Committee for Electrotechnical
5、Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2014 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No.
6、EN 50125-1:2014 E ICS 29.280; 45.060.10 Supersedes EN 50125-1:1999 English version Railway applications - Environmental conditions for equipment - Part 1: Rolling stock and on-board equipment Applications ferroviaires - Conditions denvironnement pour le matriel - Partie 1: Equipement embarqu du matr
7、iel roulant Bahnanwendungen Umweltbedingungen fr Betriebsmittel Teil 1: Betriebsmittel auf Bahnfahrzeugen This European Standard was approved by CENELEC on 2014-02-24. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europea
8、n Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versio
9、ns (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical commi
10、ttees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, S
11、lovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 50125-1:2014EN 50125-1:2014 - 2 - Contents Page Foreword . 3 1 Scope . 4 2 Normative references . 4 3 Terms and definitions 4 4 Environmental conditions 5 4.1 General . 5 4.2 Altitude 5 4.3 Temperature . 6 4.4 Humidity 7 4.5 A
12、ir movement .10 4.5.1 Wind .10 4.5.2 Surrounding air 10 4.6 Rain 10 4.7 Snow and hail .10 4.8 Ice .11 4.9 Solar radiation 11 4.10 Lightning .11 4.11 Pollution 11 4.12 Large animals on the track .12 Annex ZZ .13 Bibliography 14 BS EN 50125-1:2014- 3 - EN 50125-1:2014 Foreword This document (EN 50125-
13、1:2014) has been prepared by CLC/SC 9XB “Electromechanical material on board rolling stock“ of CLC/TC 9X “Electrical and electronic applications for railways“. The following dates are fixed: latest date by which this document has to be implemented at national level by publication of an identical nat
14、ional standard or by endorsement (dop) 2015-02-24 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2017-02-24 This document supersedes EN 50125-1:1999. EN 50125-1:2014 is a revision of EN 50125-1:1999 with an extended scope to cover mechanical req
15、uirements, as requested by the European Railway Agency (ERA). EN 50125 is divided into the following parts: - EN 50125-1, Railway applications Environmental conditions for equipment Part 1: Rolling stock and on-board equipment (the present document). - EN 50125-2 Railway applications Environmental c
16、onditions for equipment Part 2: Fixed electrical installations. - EN 50125-3 Railway applications Environmental conditions for equipment Part 3: Equipment for signalling and telecommunications. Attention is drawn to the possibility that some of the elements of this document may be the subject of pat
17、ent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For
18、 the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this document. BS EN 50125-1:2014EN 50125-1:2014 - 4 - 1 Scope This European Standard intends to define environmental conditions within Europe. NOTE 1 It can also be applied elsewhere by agreement. The scop
19、e of this European Standard covers the definitions and ranges of the following parameters: Altitude, temperature, humidity, air movement, rain, snow and hail, ice, solar radiation, lightning, pollution for rolling stock and on-board equipment (mechanical, electromechanical, electrical, electronic).
20、In particular, this European Standard defines interface conditions between the vehicle and its environment. The defined environmental conditions are considered as normal in service. NOTE 2 Further guidance on severe conditions can be found within prCEN/TR 16251. Rolling stock or parts of it can also
21、 be used outside the specification with reduced performance. NOTE 3 In these cases, relevant operating rules could be necessary to ensure the technical compatibility between the rolling stock and environmental conditions. Microclimates surrounding components may be defined by relevant product standa
22、rds or by special requirements. Passenger effects on the equipment and equipment effects on the passengers are not considered in this European Standard. This European Standard does not apply to cranes, mining vehicles, cable cars. This European Standard also does not apply to natural disaster (e.g.
23、earthquake). 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (includ
24、ing any amendments) applies. EN 14067-6, Railway applications Aerodynamics Part 6: Requirements and test procedures for cross wind assessment EN 50124-2, Railway applications Insulation coordination Part 2: Overvoltages and related protection EN 60529, Degrees of protection provided by enclosures (I
25、P Code) (IEC 60529) EN 60721-3-5, Classification of environmental conditions Part 3: Classification of groups of environmental parameters and their severities Section 5: Ground vehicle installations (IEC 60721-3-5) HD 478.2.3 S1, Classification of environmental conditions Part 2: Environmental condi
26、tions appearing in nature Air pressure (IEC 60721-2-3) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. BS EN 50125-1:2014- 5 - EN 50125-1:2014 3.1 environmental condition physical, chemical or biological condition, external to a product to which
27、it is subjected at a certain time 3.2 vehicle compartment enclosure for housing of mechanical, electrical and/or electronic equipment 3.3 environmental parameters one or more physical, chemical or biological properties characterising an environmental factor (e.g. temperature, humidity) EXAMPLE The e
28、nvironmental factor “snow and hail” is characterised by the parameters: snow level above top of rail and diameter of the hailstones. 3.4 severity of environmental parameters value of each quantity characterising the environmental parameter EXAMPLE The severity of snow is defined by values of snow le
29、vel above top of rail (in mm). 4 Environmental conditions 4.1 General In the following clauses the environmental parameters are given at which the vehicle and its equipment shall function as specified. In the text, normal environmental conditions are considered as being those of Europe. They are cla
30、ssified with a suffix 1, 2, 3, etc. and special conditions with a suffix X. The class shall be required in the specification, otherwise the class with suffix 1 shall be assumed. NOTE Except otherwise stated in this document, general information is given by EN 60721-3-5, HD 478.2.1 S1, HD 478.2.2 S1,
31、 HD 478.2.3 S1 and HD 478.2.7 S1. The severities specified are those which will have a low probability of being exceeded. All specified values are maximum or limiting values. These values may be reached, but do not occur permanently. Depending on the situation there may be different frequencies of o
32、ccurrence related to a certain period of time. Such frequencies of occurrence have not been included in this European Standard, but should be considered for any environmental parameter. They should be additionally specified if applicable. 4.2 Altitude The vehicle and its equipment shall perform as s
33、pecified for the different classes of altitude range relative to sea level given in Table 1. BS EN 50125-1:2014EN 50125-1:2014 - 6 - Table 1 Classes of altitude range Classes Altitude range relative to sea level m A1 A2 A3 AX Up to1 400 Up to 1 000 Up to 1 200 More than 1 400 NOTE 1 The mainline rai
34、lway lines with the highest altitudes are Gotthard (Switzerland): 1 151 m, Brenner (Italy): 1 371 m, Semmering (Austria): 985 m, Finse: (Norway): 1 222 m. NOTE 2 Altitude is relevant, in particular for air pressure level and its consequence on cooling systems, air conditioning systems, diesel engine
35、s and electrical clearances. When the class AX is specified, the maximum altitude should be provided. The air pressure shall be assumed according to HD 478.2.3 S1. 4.3 Temperature The vehicle and its equipment shall operate as specified for the different classes of temperatures given in Table 2, col
36、umn 1. Table 2 Classes of air temperatures Classes (1) Air temperature external to vehicle C (2) Inside vehicle compartment temperature C T1 T2 T3 TX -25 +40 -40 +35 -25 +45 -40 +50 -25 +50 -40 +45 -25 +55 -40 +60 NOTE 1 Class T1 of Table 2 corresponds to Class 5K2 of EN 60721-3-5. The temperatures
37、in column (2) are informative as the maximum and minimum within a vehicle and should be considered in the design of equipment within the vehicle. Where different operational temperatures are considered due to local knowledge, or where operational temperature ranges are limited by heating or cooling
38、systems these shall be agreed and stated in the specification. A reference temperature of 25 C is considered as being the permanent temperature for which the effects on the material ageing are equivalent to those of the climatic temperature during the lifetime. When stated in product or equipment st
39、andards, particular requirements apply. BS EN 50125-1:2014- 7 - EN 50125-1:2014 Where particular system attributes or performances are disproportionally affected by extremes of temperature, it is permissible to derate such equipment and to install it in a controlled climatic environment. The tempera
40、ture range shall be defined in the specification. The temperatures inside vehicle are values measured in free air out of the heat emitting elements. It shall be taken into account that the external ambient air temperature in special locations such as near the ballast or over the roof may exceed the
41、external open air temperature. In this case, the temperature level to be considered shall be defined in the specification. NOTE 2 The yearly average temperature for cubicles inside the rolling stock defined in EN 50155 is conventionally taken as 45 C for all classes (e. g. for reliability calculatio
42、n). 4.4 Humidity The following external humidity levels shall be assumed: yearly average: 75 % relative humidity; on 30 d in the year continuously: between 75 % and 95 % relative humidity; on the other days occasionally: between 95 % and 100 % relative humidity; maximum absolute humidity: 30 g/m3occ
43、urring in tunnels. An operationally caused infrequent and slight moisture condensation shall not lead to any malfunction or failure. The psychometric charts of Figures 1 and 2 give the ranges of variation of the relative humidity for the different temperature classes that will not be exceeded for mo
44、re than 30 d per year: BS EN 50125-1:2014EN 50125-1:2014 - 8 - Absolute air humidity (g/m3) Air temperature (C) Key maximum for tunnel Figure 1 Humidity ranges for temperature classes T1 and TX Relativeairhumidity(%)BS EN 50125-1:2014- 9 - EN 50125-1:2014 Absolute air humidity (g/m3) 100 90 80 70 60
45、 50 40 20 10 0 80 70 60 50 40 30 20 10 0 10 20 30 40 50 60 Air temperature (C) Relativeairhumidity(%)0,0010,0020,0030,0050,010,020,030,050,10,20,30,51,02,03,05,010,020,030,050,070,0100Absolute air humidity (g/m3) Maximum for tunnel 30 T2 T3 T2 T3 Air temperature (C) Key maximum for tunnel Figure 2 H
46、umidity ranges for temperature classes T2 and T3 At cooled surfaces, 100 % relative humidity may occur causing condensation on parts of equipment. This shall not lead to any malfunction or failure. Sudden changes of the air temperature local to the vehicle may cause condensation of water on parts of
47、 equipment with a rate of 3 K/s and a maximum variation of 40 K. BS EN 50125-1:2014EN 50125-1:2014 - 10 - These conditions, particularly occurring when entering or leaving a tunnel shall not lead to any malfunction or failure of the equipment. In winter melting ice and snow accumulated on the vehicl
48、e may lead to high humidity levels in the depot, condensate water on the vehicle may freeze again when the vehicle is leaving the depot. 4.5 Air movement 4.5.1 Wind For the purposes of equipment operation e.g. fan systems, cooling systems the max. wind speed of 35 m/s at standstill shall be assumed.
49、 Exceptionally higher wind speed, up to maximum 50 m/s at standstill, may occur. In this case, the equipment performance may be temporarily affected but no permanent damage shall occur. Cross wind assessment of railways is described in EN 14067-6. 4.5.2 Surrounding air The relative movement of surrounding air in respect to the vehicle shall be defined where applicable. Pressure pulses (e.g. due to passing vehicles or entering a tunnel) shall be also taken into account. 4.6 Rain Rain
